A method for establishing a cassia pine cutting seedling raising system

Abstract

The invention discloses an establishing method of a pinus kesiya royle ex gordon cutting and breeding system. According to the establishing method disclosed by the invention, scions of superior plants are selected as cutting propagation materials, an optimized light matrix is adopted to be matched with hormone, and nourishing-bag seedlings are utilized for carrying out rapid cultivation and seedling management, so that quick industrial breeding which is light in matrix, good in rooting, high in seedling forming rate and strong in nursery stock is realized, the breeding cost is reduced, the breeding efficiency is increased, and meanwhile, forestation and transportation cost and labor intensity are reduced. Short and dry type stock plants of the pinus kesiya royle ex gordon produce 200 to 300 scions per plant, the weight of light-matrix nourishing-bag seedlings is 0.14 to 0.15 kg per bag when the seedlings are out of a nursery, the rooting time after cutting is 10 to 15 days ahead, the average seedling height in the sixth month is increased from 16.32 to 16.46 cm to 18.78 to 19.48 cm, the average lateral root number is increased from 3.59 to 3.97 per plant to 5.18 to 6.81 per plant, and the seedling forming rate is increased from 42 percent to 85 to 90 percent.

Description

technical field [0001] The invention belongs to the technical field of rapid propagation and seedling cultivation of coniferous species, and in particular relates to a method for establishing a cassia pine cutting seedling cultivation system. Background technique [0002] Cascia Song ( Pinus kesiya Royle ex Gordon) is a tree species of the genus Pinus in the family Pinaceae. The height of the tree is 30-35m. The bark is thick, dark brown, deeply longitudinally fissured, the side branches are thick, the branch angle is large, the leaves are black and green, and there are three needles in a bundle. , 15-20cm long; blooms from April to May, and the fruit matures 2 years after flowering. The cones are ovoid, 5-9cm long. Cassia pine is mainly distributed in eastern India, Myanmar, Laos, Cambodia, Thailand and northern Vietnam where the altitude is 300m-2700m, the annual precipitation is 700mm-1800mm, and the annual average temperature is 17℃-22℃. Cassia pine is one of the fas...

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Problems solved by technology

[0003] The introduction of cassia pine from abroad to our country is still short, and only the Relin Institute of the Chinese Academy of Forestry has been introduced into China for less than 5 years. The relevant research literature only involves the growth measurement of seeds and seedlings, and the growth data of young forests and mature forests are still rare.

However, the introduction of cassia pine in my country is short, and the development of plantations is mainly planting seedlings, but the total amount of introduced seed resources is limited, and it will take many years to establish seed orchards or hybrid control pollination and seed supply.

At present, the tissue culture of Pinaceae coniferous plants is difficult, and the grafted mother plants can only provide a small amount of material for the production of clone cuttings. Large-scale propagation is mainly based on cutting propagation of clone seedlings. The cutting propagation technology of Cassia pine is still in the process of exploring and summarizing stage

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